Git commits in Moodle 2.8.4 by Paul Nicholls

commit a92cd1e420113c999d8316a5f3609c471d8eb63d
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Thu, 12 Feb 2015 11:57:09 +0800
Tag:    v2.8.4

MDL-49059 medialib: Add test cases for invalid Youtube URL param values

commit 10a382f1c8c357d1c720cfd122c42eb630cdff96
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Thu, 12 Feb 2015 10:26:43 +0800
Tag:    v2.8.4

MDL-48973 Atto: Atto does not listen to the drop event

commit 40b72c27e8fc6de1d0ccba113d6e618adb1a5362
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Thu, 12 Feb 2015 04:34:33 +0800
Tag:    v2.8.4

MDL-49059 medialib: Support links to Youtube videos within playlists

commit 71ce7d03eed15295ef6720c82422cada37121b52
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Thu, 12 Feb 2015 04:26:59 +0800
Tag:    v2.8.4

MDL-49059 medialib: Add tests for Youtube videos within playlists

commit f266c90917384c4b127c140af316cc849fe6b6a1
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Wed, 11 Feb 2015 08:33:11 +0800
Tag:    v2.8.4

MDL-49059 medialib: Support start time params in Youtube URLs

commit 7c339df7cb947962f1ceff82e63e712cbec4d6ae
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Wed, 11 Feb 2015 04:55:18 +0800
Tag:    v2.8.4

MDL-49059 medialib: Add test cases for Youtube start times